Host status of weeds for Pratylenchus coffeae

BackgroundPopulations of yam dry rot nematodes Scutellonema bradys, Pratylenchus coffeae and P. brachyurus can be sustained on weed hosts.ObjectiveEvaluate the reaction of 10 weeds frequently found in Alagoas to P. coffeae under greenhouse conditions.MethodsTwo experiments were carried out in a comp...

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Bibliographic Details
Published in:Advances in Weed Science 2022-01, Vol.40, p.e020220006
Main Authors: Araújo, Alverlan S., Assunção, Mayara C., Moura, Gilson, Souza, Renan C., Muniz, Maria de Fatima S.
Format: Article
Language:English
Subjects:
AGRONOMY
Crop diseases
Disease management
Dry rot
Flowers & plants
Inoculation
Inoculum
Nematodes
Populations
Pratylenchus coffeae
Ricinus communis
Weed control
Weeds
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Summary:BackgroundPopulations of yam dry rot nematodes Scutellonema bradys, Pratylenchus coffeae and P. brachyurus can be sustained on weed hosts.ObjectiveEvaluate the reaction of 10 weeds frequently found in Alagoas to P. coffeae under greenhouse conditions.MethodsTwo experiments were carried out in a completely randomized design, with 11 treatments, constituted of 10 weed species and the control (Dioscorea cayenensis) with eight replications. Plants were inoculated with 2,000 nematode specimens, nematode populations were evaluated in roots and soil 60 days after inoculation and the reproduction factor (RF) defined as RF = final population/initial population was calculated.ResultsEuphorbia hyssopifolia showed RF=0 and was considered as non-host, whereas Chenopodium album, Amaranthus sp., Panicum maximum, Eleusine indica, Senna occidentalis, Emilia coccinea and Richardia brasiliensis, showed RF1 only in the second trial and were classified as good hosts.ConclusionRicinus communis and M. lathyroides are potential sources of nematode inoculum for dry rot disease development.
ISSN:2675-9462
2675-9462
DOI:10.51694/AdvWeedSci/2022;40:00015